Automatic safety-guard for elevator-ways



(No Model.) 2 Sheets-Sheet 1.

Y J. KoBos. AUTOMATIC SAFETY GUARD POB. ELEVATOR WAYS.

aented'Nov. s 1894.'

"Ill MHHA mamy/u. cy

` (No Mod'l.) 2 Sheets-.Sheet 2.

J. KOBOS. AUTOMATIC SAFETY GUARD TOR TLEVATOR WAYS.

N0.'529,177.Y Patented NOV. 13, 1894.

il *1132 cw: :ma crm:

1111,1; NZZ? mgm; f

NiTnD STAT-Es nuten.

PATENT JACOB KOBOS, OF OHICOPEE, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 529,177, dated November 13, 1 894.

Application tiled August 13, 1894.

To all whom it may concern: A

Be it known that I, JACOB KOBOS, a subject of the Emperor of Germany, residing at Chicopee, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Automatic Safety-Guards for Elevator-Ways, of which-the following is a specification.

This invention relates to improvements in automatic safety guards for elevator ways, more particularly those of the class in which the gate is automatically raised when the ele-` vator car is at, or about at, the floor, and which closes when the elevator car passes away from such floor, either above or below, as the case may be.

The object of the invention is to improve the safety devices especially with respect to theadoption therein of approved mechanical prlnciples, to the certainty of the automatic operation, and to the simplicity of the constructions; and the invention consists in constructions and combinations or arrangements of parts all substantially as will hereinafter fully appear and be set forth in the claims. p

Reference is to be had to the accompanying drawings, in which- Figure l is a perspective view showing the elevator way,-with the gate thereat,-with the automatically operative appliance, and showing the elevator car as rising ready to Yeffect the automatic operation of the gate. Fig. 2 is a perspective view showing a fixture of the elevator car as seen at the opposite side from that shown in Fig. l. Fig. 3 is a front view of the upper portion ofl the gate with movable devices thereon also showing the co-operation with the latter of a fixture on the elevator car which fixture is indicated in vertical section. Fig. Lis a horizontal cross section of a vertical tube-like way at one edge of the gate showing the counterweight for the gate, therein, with the hinged foot and toe thereof. Fig. 5 is a vertical sectional view of the aforesaid tubular way with the counterweight having the hinged foot therein, said view being designed to indicate the gate-lifting action on thedescent of the elevator car, a fixture of which latter is also shown. Fig. 6 is a view similar to Fig. 5 but more particularly arranged to show the capability of the elevator to rise without direct effect upon the semi No. 520,185. un mada toe-provided counterweight. Fig. 7 is a plan view of a portion of the elevator car, with the ment with the coacting elevator car fixture, at the time when the gate has been raised.

Fig. 9 is a perspective vie'w showing the sep'- arate parts ofthe depending foot of the counterweight.

In the drawings, A, represents the floor of a building having the hatchway or elevator way, B, and C represents the elevator car of a common form and adapted to be operated in the usual manner.

D represents the safety gate at the one side of the elevator way, arranged to slide vertically on and between the vertical posts, a a2. Upon the upper horizontal bar or part, b, of the gate are two bars d d arranged horizontally end to end and guided t0 slide horizontally toward and from each other. The outer extremities of these bars normally have engagements with the vertical racks f fon the side posts a a2, and the springs g g normally hold said bars d d with their outer ends in engagement with said racks. At their inner extremities the bars d d are provided with transverse projections h h the outer edges of which are inclined upwardly and inwardly as at l0 10 and downwardly and inwardly as at l2 12. that the inner ends of the partcZ havea slight separation. One of the said posts a is hollow or tubular with the slot t' through the side which is at right angles to the plane of the gate,'and as seen in Figs. 4t and 5. In this tubular post is a counterweighty connected by the sheaveguided cord or chain 7c with the gate d.

The elevator car has the offset arms, or support 'm which carries the trough-like shoe, n the opposite Vinner sides of which are, between their top and bottom, inwardly convergent. See Fig. 2. Now as the car in rising, ap-

proaches the level of the floor, the said shoe engages the inclined projections h h of the bars d d, and while in such engagement the initial action may be to cause the said proj ections h h to be moved toward each other to It will also be noted some extent, and thereby draw the bars so as to nearly or quite disengage their outer ends from the racks. The effect of the springs g g will be to insure the retention of the engagement between parts h 7L and n to lift the gate to its limit. When the limit of upward movement ofthe gate is reached which movement may be limited by the abutment studs, 25, 25, seen in Fig. 1, the then continued upward movement of the car and its shoe, n, through the cam action of the engaging surface of the latter, cause the projections h h to be so forciby crowded toward each other as to permit the shoe to pass over, between and free from them, whereupon the bars are then free to be outwardly forced under the reaction of the springs g g to their engagementwith the racks, ff (the teeth of which are not ratchet-like, but rounded). The gate will now descend by reason of its weight, the outer ends ot the bars, CZ d, clicking down over the rack bars f j", this action being to prevent the too precipitate descent of the gate. The descent of the car toward and into proximity to the same iioor again causes the lifting of the gate, but in this case it is by reason ofthe coaction of the projection q on the elevator car with the foot t of the aforesaid counterweightj. It will be seen that the foot tof the counterweight is practically hinge-connected to the weight,and it has the toe t2 hingeconnected to the bar which constitutes the foot, the joint being of a well known form which allows the toe to swing up on pressure from below, but which remains rigidly in its rlght angularposition and unaiected by any downward pressure thereupon. The toe t2 is downwardly and inwardly inclined. The foot has its back running alongside the rib u in the tubular post, which rib at a suitable relative point as seen at o is cut away or recessed, and in part covered by the plate spring, w. As the car descends, its member q in impinging upon the top of the toe t2 causes the foot and counterweight to be lowered and the gate to be raised. When the car has gone so far as to render the gate properly opened the foot t will have been, by the member q, carried down so far as to bring it opposite the recessed part, c of the rib u whereupon the transverse pressure exerted by the cam-like engagement between the elevator member q and the toe, causes,as is now permitted,- the foot to swing on the weight within the recess leaving the said member q to pass clear from and below the said foot, which then under the reaction of the spring, w or of its proper poising to again assume its normal position, with its toe projecting through the slot,

i; and of course just as soon as the engagement between said parts q and t2 is broken, the gate will by its own sufficient weight drop to its safety position.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. 'lhe combination with the vertically movable gate having the outwardly movable bars d d with the transverse projections h h at their adjacent inner ends, the springs g g for forcing the bars outwardly and the vertical rack bars with which the outer extremities of said bars engage, of the elevator car having the trough-like member or shoe fn with the inclined opposite sides substantially as and for the purposes described.

2. The combination with the elevator car having the member q and the tubular post with the slot fr' and rib u having the recess at a suitable point in its height of the gate, the counterweight in said tubular post and having a cord and sheave guided connection with the gate, the foot t having a hinge connection with the weight and having the articulated toe t2 substantially as described, which projects through said slot into the path of travel of the said member of the car substantially as described.

3. The combination with the elevator car having the member q, the tubular post with the slot t' and having the rib with the recess at asuitable point in its height, and the spring applied in the said tubular post at said recess, ot the gate, the counterweight playing in said tubular post, the hinged foot connected to the weight and sliding alongside said rib and having the articulated toe substantially as described which projects through said slot into the path of travel of said member of the car, substantially as described.

4. The vertically movable gate having the outwardly movable members h h and springs for maintaining them in their outward dispositions, the tubular post provided with the slot z, the counterweight cord connected with the gate and playing in said tubular post and having the hinged foot t with the articulated toe t2 in combination with the elevator car having supported atan upper portion thereof the trough-like member n with the inwardly and downwardly convergent opposite sides, and also having the member q to coact with said toe, all substantially for the purposes set forth.

JACOB KOBOS. Witnesses:

H. A. CHAPIN, A. N. GARDNER.

IOC

tog 

